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Something wrong is with engine sound only, fortunately.
All engine parameters were OK but sound was weird immediately after i set TO power, with engine right warmed up, now on BS server when i tried Fw there.
Engine sounds like when oil is overheated, at least this exactly sound went from my Mustang`s overheat engine with oil temperature far behind red line..

The "failing engine" sound might be just that - an incorrect sound sample playing all the time for some reason (which would be only a "cosmetic" bug)... or some actual damage algorithm kicking in too early (which would be a serious bug). More test flights at various settings will be necessary.

not only few rounds from Spitfire, AAA has the same result, yesterday i flew close to AAA (did not know about them), i just saw few tracers comming from ground
i did not hear any hits in my Fw and engine suddenly went down...
all parameters were in limits and i did not over stressed it, i suppose i was hit by AAA